Electronics from scratch
Learn how electronics power the world around you. No gatekeeping — just approachable guides, hands-on projects, and clear explanations.
Every electronics journey begins with something simple: a resistor and an LED. In this post, we’ll go through how to connect them safely, understand the role of the resistor, and why LEDs are a perfect way to start learning electronics.
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This time, we’ll make our circuit more practical — by adding a switch so we can turn the LED on and off without moving wires.
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In this step, we’ll see how to use a transistor or a MOSFET to take the load off the switch.
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